TRANSITION ELEMENTS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) The property of paramagnetism is due to the presence of ______ electrons. (unpaired) (ii) MnO4–1 ion has ______ colour and Cr2O7–2 has _____ colour. (purple, orange red) (iii)…
GROUP VIIA & GROUP VIIIA ELEMENTS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) The halogen with the highest electronegativity is __________. (Fluorine) (ii) HI is _________ agent. (reducing agent) (iii) The only halogen acid which is not…
GROUP VA & GROUP VIA ELEMENTS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) The elements ________ of group VA are called metalloids. (Arsenic and Antimony) (ii) In Birkeland and Eyde’s process is prepared from atmospheric oxygen and…
GROUP IIIA & GROUP IVA ELEMENTS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) ________ acid has the chemical formula HBO2. (Metaboric acid) (ii) Aluminium normally occurs as_________ minerals found in the rocks of outer portion of the…
s-BLOCK ELEMENTS FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Alkali metals are _______ reactive than alkaline-earth metals. (more) (ii) Alkali metals decompose water vigorously producing ________ and hydrogen. (metal hydroxide) (iii) When heated in a current of…
PERIODIC CLASSIFICATION OF ELEMENTS AND PERIODICITY FILL IN THE BLANKS Q.01: Fill in the blanks: (i) Mendeleev in his periodic table, arranged the elements according to their atomic ___. (mass) (ii) Vertical columns in modern periodic table are called _________…
REACTION KINETICS Q.01: Multiple choice questions. (i) In zero order reaction, the rate is independent of: (a) Temperature of reaction (b) Concentration of reactants (c) Concentration of products (d) None of these ANSWER: (b) Concentration of reactants EXPALNATION: The rate…
ELECTROCHEMISTRY Q.01: Multiple choice questions. For each question there are four possible answers a, b, c and d. Choose the one you consider correct. (i) The cathode reaction in the electrolysis of dil. H2SO4 with Pt electrodes is: (a) Reduction…
SOLUTIONS Q.01: Choose the correct answer for the given ones. (i) Molarity of pure water is: (a) 1 (b) 18 (c) 55.5 (d) 6 ANSWER: (c) 55.5 EXPLANATION: Molarity means number of moles of solute present in liter solution. In…
CHEMICAL EQUILIBRIUM Q.01: Choose the correct answer: (i) For which system does the equilibrium constant, Kc, has units of (conc.)-1? (a) N2 + 3H2 ⇌ 2NH3 (b) H2 + I2 ⇌ 2HI (c) 2NO2 ⇌ N2O4 (d) 2HF ⇌ H2…